Powell down, Kilby up

The A's sent C Landon Powell back down to AAA, going to 13 pitchers with the addition of lefty Brad Kilby.  With Jerry Blevins dealing with back spasms, the A's wanted to get another lefty in the pen to neutralize the Indians' left handed bats (Sizemore, Choo, Hafner, Branyan).  Powell had yet to appear for the A's in the few days since his call-up.  Kilby was excellent in his short stint with the A's last season (0.53 ERA, 17 IP, 4 BB, 20 K) and had a 1.69 ERA in 5 games at Sacramento this year.